Peng Dasong, Yu Fengqi
Department of Integrated Electronics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Aug;56(8):1753-60. doi: 10.1109/TUFFC.2009.1240.
Based on finite element analysis, we propose a simulation model for radio frequency identification (RFID) SAW tag devices. Electric properties of metal electrode on substrate greatly affect the characteristics of the device and are discussed in the paper. Then the right and left boundary conditions for the device are applied to remove large unwanted waves generated by wave propagation near the boundaries. To save computation time, a 2-D model is proposed, where some mesh skills are applied. The tag device is simulated in 2 steps. First, we use modal analysis to get the device phase velocity and harmonic frequency. Second, a tag with multireflectors is simulated. Based on the simulations, we have designed and fabricated a SAW tag. A comparison is made between simulation and experimental results and shows our simulation model agrees with the experiment very well.
基于有限元分析，我们提出了一种用于射频识别（RFID）声表面波（SAW）标签设备的仿真模型。文中讨论了衬底上金属电极的电学特性对设备特性有很大影响。然后对该设备应用左右边界条件，以消除边界附近波传播产生的大量不需要的波。为节省计算时间，提出了一种二维模型，并应用了一些网格技术。标签设备分两步进行模拟。首先，我们使用模态分析来获取设备的相速度和谐波频率。其次，对带有多个反射器的标签进行模拟。基于这些模拟，我们设计并制造了一个声表面波标签。对模拟结果和实验结果进行了比较，结果表明我们的模拟模型与实验结果非常吻合。
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